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公开(公告)号：US20220381635A1
公开(公告)日：2022-12-01
申请号：US17660135
申请日：2022-04-21
Applicant: Infineon Technologies AG
Inventor： Andreas Wiesbauer , Alessandro Caspani , Christian Jenkner , Athanasios Kollias
Abstract: A controller for an environmental sensor provides digital environmental measurement values from analog environmental measurements performed by analog circuitry, the digital environmental measurement values lying in a global scale range. The controller subjects the global scale range to a subdivision into scale subranges that are proper subranges of the global scale range. The controller selects, among the scale subranges, one scale subrange in which an analog environmental measurement is to be performed, selects an offset information and a gain information that are associated with the selected scale subrange and that are indicative of an offset and a gain to be applied by the analog circuitry to perform an analog environmental measurement in the selected scale subrange, and to provide the offset information and the gain information to the analog circuitry.
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公开(公告)号：US20220167095A1
公开(公告)日：2022-05-26
申请号：US17484115
申请日：2021-09-24
Applicant: Infineon Technologies AG
Inventor： Niccoló De Milleri , Christian Bretthauer , Alessandro Caspani , Alessandra Fusco
Abstract: A MEMS device includes a MEMS sound transducer, and control circuitry. The control circuitry includes a supply signal provider for providing a high-level supply signal and read-out circuitry for receiving an output signal from the MEMS sound transducer, and a switching arrangement for selectively connecting the MEMS sound transducer to the supply signal provider, and for selectively connecting the MEMS sound transducer to the read-out circuitry based on a control signal. The control circuitry provides the control signal having an ultrasonic actuation pattern to the switching arrangement during a first condition TX of the control signal, wherein the ultrasonic actuation pattern of the control signal triggers the switching arrangement for alternately coupling the high-level supply signal to the MEMS sound transducer.
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3.发明申请公开(公告)号：US20180084343A1
公开(公告)日：2018-03-22
申请号：US15706825
申请日：2017-09-18
Applicant: Infineon Technologies AG
Inventor： Dietmar Straeussnigg , Alessandro Caspani , Elmar Bach
CPC classification number: H04R3/04 , B81B7/02 , G01P21/00 , H04R1/22 , H04R3/005 , H04R5/027 , H04R19/04 , H04R29/004 , H04R2201/003 , H04R2201/401 , H04R2499/11
Abstract: In various embodiments, a circuit arrangement includes a calibration filter set up to receive a signal based on a first signal and to provide a calibrated signal, the first signal being a signal which is provided by an analog/digital converter and is based on an analog signal, the analog signal being provided by at least one sensor of a sensor arrangement, a filter arrangement set up to receive a signal based on the first signal and to provide a second signal, and a controller set up to select a sensor-specific control signal dependent on the frequency response of the sensor from a plurality of control signals and to provide the calibration filter with said signal, the calibrated signal being based on the first signal and the sensor-specific control signal and corresponding or substantially corresponding to a predefined spectral mask in a predefined frequency range.
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公开(公告)号：US20240430622A1
公开(公告)日：2024-12-26
申请号：US18337959
申请日：2023-06-20
Applicant: Infineon Technologies AG
Inventor： Fulvio Ciciotti , Jose Luis Ceballos , Luca Sant , Alessandro Caspani , Andreas Wiesbauer
Abstract: An attenuator circuit includes a microelectromechanical system (MEMS) device having an output for providing an analog output voltage; a switch having a first controlled node coupled to an output of the MEMS device, a second controlled node for receiving a replica analog output voltage, and a control node for receiving a control signal; and a capacitor coupled to the switch.
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公开(公告)号：US11863933B2
公开(公告)日：2024-01-02
申请号：US17484115
申请日：2021-09-24
Applicant: Infineon Technologies AG
Inventor： Niccoló De Milleri , Christian Bretthauer , Alessandro Caspani , Alessandra Fusco
CPC classification number: H04R19/005 , B81B7/008 , B81B2201/0257 , H04R2201/003
Abstract: A MEMS device includes a MEMS sound transducer, and control circuitry. The control circuitry includes a supply signal provider for providing a high-level supply signal and read-out circuitry for receiving an output signal from the MEMS sound transducer, and a switching arrangement for selectively connecting the MEMS sound transducer to the supply signal provider, and for selectively connecting the MEMS sound transducer to the read-out circuitry based on a control signal. The control circuitry provides the control signal having an ultrasonic actuation pattern to the switching arrangement during a first condition TX of the control signal, wherein the ultrasonic actuation pattern of the control signal triggers the switching arrangement for alternately coupling the high-level supply signal to the MEMS sound transducer.
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Patent Agency Ranking
公开(公告)号：US20190200147A1
公开(公告)日：2019-06-27
申请号：US16229916
申请日：2018-12-21
Applicant: Infineon Technologies AG
Inventor： Dietmar Straeussnigg , Alessandro Caspani , Andreas Wiesbauer
CPC classification number: H04R29/004 , H04R19/04 , H04R2201/003
Abstract: In accordance with an embodiment, a system includes a digital calibration filter device configured to receive a digital input signal based on a sensor output signal from a sensor, receive a sensor-specific control signal, and perform digital filter processing of the digital input signal to produce a calibrated output signal, wherein the digital filter processing is based on the sensor-specific control signal; and a control device configured to select the sensor-specific control signal from a plurality of sensor-specific control signals based on an ascertained influencing parameter, and provide the sensor-specific control signal to the digital calibration filter device.
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公开(公告)号：US12218679B2
公开(公告)日：2025-02-04
申请号：US18146641
申请日：2022-12-27
Applicant: Infineon Technologies AG
Inventor： Dan Ioan Dumitru Stoica , Constantin Crisu , Constantin Stroi , Vlad Buiculescu , Matthias Böhm , Alessandro Caspani , Cesare Buffa , Franz Michael Darrer
IPC: H03M1/10 , G10L21/0232 , H03M1/06 , H03M1/34
Abstract: A sensor circuit, having a startup phase and an operation phase, includes: a sensor configured to generate a sensor signal based on a measured property, wherein the sensor signal has a frequency spectrum defined by a first frequency and a second frequency that is greater than the first frequency; a signal processing circuit including an analog-to-digital converter (ADC) configured to convert the sensor signal into a digital sensor signal; and an offset diagnosis circuit. The offset diagnosis circuit includes: a low pass filter having a cutoff frequency less than the first frequency and configured to generate a filtered signal based on the digital sensor signal; an offset register configured to store a startup signal value of the filtered signal during the startup phase; and an offset comparator circuit configured to set a threshold range based on the startup signal value for use during the operation phase.
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公开(公告)号：US11879801B2
公开(公告)日：2024-01-23
申请号：US17660135
申请日：2022-04-21
Applicant: Infineon Technologies AG
Inventor： Andreas Wiesbauer , Alessandro Caspani , Christian Jenkner , Athanasios Kollias
CPC classification number: G01L9/025 , G01L19/0061 , G01L2019/0053
Abstract: A controller for an environmental sensor provides digital environmental measurement values from analog environmental measurements performed by analog circuitry, the digital environmental measurement values lying in a global scale range. The controller subjects the global scale range to a subdivision into scale subranges that are proper subranges of the global scale range. The controller selects, among the scale subranges, one scale subrange in which an analog environmental measurement is to be performed, selects an offset information and a gain information that are associated with the selected scale subrange and that are indicative of an offset and a gain to be applied by the analog circuitry to perform an analog environmental measurement in the selected scale subrange, and to provide the offset information and the gain information to the analog circuitry.
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公开(公告)号：US11558705B2
公开(公告)日：2023-01-17
申请号：US16229916
申请日：2018-12-21
Applicant: Infineon Technologies AG
Inventor： Dietmar Straeussnigg , Alessandro Caspani , Andreas Wiesbauer
Abstract: In accordance with an embodiment, a system includes a digital calibration filter device configured to receive a digital input signal based on a sensor output signal from a sensor, receive a sensor-specific control signal, and perform digital filter processing of the digital input signal to produce a calibrated output signal, wherein the digital filter processing is based on the sensor-specific control signal; and a control device configured to select the sensor-specific control signal from a plurality of sensor-specific control signals based on an ascertained influencing parameter, and provide the sensor-specific control signal to the digital calibration filter device.
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公开(公告)号：US11927645B2
公开(公告)日：2024-03-12
申请号：US17463753
申请日：2021-09-01
Applicant: Infineon Technologies AG
Inventor： Dan-Ioan-Dumitru Stoica , Cesare Buffa , Alessandro Caspani , Constantin Crisu , Victor Popescu-Stroe , Bernhard Winkler
CPC classification number: G01R31/64 , G01R27/2605 , G01R35/00 , G01H11/06 , G01L9/12
Abstract: A capacitive sensor includes a first electrode structure; a second electrode structure that is counter to the first electrode structure, wherein the second electrode structure is movable relative to the first electrode structure and is capacitively coupled to the first electrode structure to form a capacitor having a capacitance that changes with a change in a distance between the first electrode structure and second electrode structure; a signal generator configured to apply an electrical signal at an input or at an output of the capacitor to induce a voltage transient response at the output of capacitor; and a diagnostic circuit configured to detect a fault in the capacitive sensor by measuring a time constant of the first voltage transient response and detecting the fault based on the time constant and based on whether the first electrical signal is the pull-in signal or the non-pull-in signal.
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